Ratchet gear assembly for wrenches and dies



Feb. 19, 1957 R. o. WRIGHT 2,781,530

RATCHET GEAR ASSEMBLY FOR WRENCHES AND DIES Filed Jan. 12, 1955INVENTOR. A 6) a W/P/4/77 ATTCI RN EYS United States Patent i RATCHETGEAR ASSEMBLY FOR WRENCHES AND DIES Roy 0. Wright, Huntington, W. Va.

Application January 12, 1955, Serial No.-481,459

1 Claim. (Cl. 10-124) This invention relates to a tool, and moreparticularly to a ratchet gear assembly for wrenches and dies.

This invention is an improvement on the tool shown in my prior PatentNo. 2,559,332.

The object of the invention is to provide a tool which will facilitatethe die cutting or threading of pipes of various sizes.

Another object of the invention is to provide a ratchet gear assemblyfor wrenches and dies wherein pipes of any desired size can beaccurately gauged and threaded.

A further object of the invention is to provide a ratchet gear assemblyfor wrenches and dies which is extremely simple and inexpensive tomanufacture.

Other objects and advantages will be apparent during the course of thefollowing description.

In the accompanying drawings, forming a part of this application, and inwhich like numerals are used to designate like parts throughout thesame:

Figure 1 is a sectional view taken on the line 1-1 of Figure 2.

Figure 2 is a side elevational view of the tool of the presentinvention, with parts broken away and in section.

Figure 3 is a sectional view taken on the line 33 of Figure 2.

Figure 4 is a sectional view taken through the bracket forming part ofthe gauge.

Figure 5 is a side elevational view taken on the line 5-5 of Figure 4.

Figure 6 is an elevational view of the ring forming part of the gauge.

Figure 7 is a side elevational view taken on the line 7-7 of Figure 6.

Figure 8 is a side elevational view of the sleeve.

Referring in detail to the drawings, the numeral 10 designates a sectionof a pipe which may be threaded as at 11, by means of the tool of thepresent invention. The tool includes a hollow tubular sleeve which isindicated generally by the numeral 12, Figure 8, and the sleeve 12includes three spaced parallel elongated slots 14, 15 and 16 for apurpose to be later described.

Mounted on the sleeve 12 is a housing 17 which can be made of anysuitable material, and the housing 17 inincludes a pair of end walls 18and 19 which are arranged in spaced parallel relation with respect toeach other, Figure 2. The housing 17 further includes an annular sidewall 20. The walls 18 and 19 are provided with registering apertures 22and 21. A shaft 23 has a cylindrical stem 24 extending through theregistering apertures 21 and 22, and a key 26 serves to connect a piniongear 25 to the stem 24 of the shaft 23.

The shaft 23 further includes an enlarged shank 27 and arranged on theouter end of the shaft 23 is a square shaped portion 28 which is adaptedto be engaged by the socket 30 of a wrench 29. Thus, by rotating thewrench 29, the shaft 23 will rotate, and this in turn will causerotation of the pinion gear 25.

Positioned Within the housing 17 is a gear 31 which is arranged inmeshing engagement with the pinion gear 2,781,530 Patented Feb. 19, 1957ice 25. The gear 31 is keyed to the sleeve 12 by means of a key 32 whichengages a slit or cutout 13 in the exterior surface of the sleeve 12.

Formed integral with the housing 17 or secured thereto is a head 33which is provided with a chamber or cutout 34. A stud or pin 35 isslidably mounted in the head 33, and the stud 35 is provided with aninner tapered prong 37 which engages teeth 38 that are formed on theouter periphery of a die 39. The die 39 is provided with an 0 innerthreaded portion 40 so that as the die 39 rotates,

the threaded portion 40 will cause the threads 11 to be formed on thepipe 10. A coil spring 41 is circumposed on the stud 35 and abuts theprong'37 for urging the prong 37 into engagement with the teeth 38, anda collar or knob 36 is arranged on the outer end of the stud 35.

The tool of the present invention further includes a gauge which isindicated generally by the numeral 42, and the gauge 42 serves to insurethat the pipe 10 is maintained in its proper position with respect tothe remaining portion of the tool. The gauge 42 includes a ring 43 whichsurrounds the sleeve 12, and the ring 43 is provided with four threadedapertures 44, 45, 46 and 47, Figure 6. The gauge 42 further includes abracket 48 which has a semi-circular shape, Figures 4 and 5. The bracket48 includes two sections 49 and 50, and the section 50 is of greaterthickness or size than the section 49 for a purpose to be laterdescribed. The bracket 48 further includes three slots 51, 52 and 53.The slots 51 and 52 are of greater length than the intermediate slot 53.

The gauge 42 further includes a pair of similar bolts which areindicated generally by the numeral 54, and each of the bolts 54 includesan outer head 55 and a threaded stem 56 of reduced diameter. Interposedbetween the pair of bolts 54 is a securing element or bolt 57 which alsoincludes a threaded shank 58 and a head 59. The shank 58 is shorter thanthe shanks 56 as shown in Figure 1. A fourth bolt 60 is provided, andthe bolt 60 includes a threaded stem 61 that has a hand grip or handle62 connected thereto.

From the foregoing it is apparent that there has been provided a toolwhich is an improvement over the tool shown and described in my priorPatent 2,559,332. The tool of the present invention is adapted tofacilitate the work of threading pipes such as the pipe 10. In use thepipe 10 can be positioned in the tool as shown in 1 and 2, and then thegauge 42 is adjusted on the sleeve 12. The bolts 54 and 60 are adjustedinwardly until they engage the outer surface of the pipe 10 whereby thetool is maintained centered on the pipe. Then, by rotating the handle29, the shaft 23 will be rotated and this turn will cause rotation ofthe pinion gear 25 which meshes with and rotates on the gear 31. Sincethe gear 31 is keyed as at 32 to the sleeve 12, then this notation ofthe handle 29 would ordinarily result in rotation of the sleeve 12.However, the bolts 54 and 60 have their inner ends engaging frictionallythe outer surface of the pipe 10, so that the sleeve 12 cannot rotate onthe pipe 10. Thus, as the Wrench or handle 29 is turned, the shaft 23Will turn and the gear 25 will walk around or travel around thestationary gear 31 to thereby cause rotation of the housing 17 about thesleeve 12. As the housing 17 rotates it carries the head 33 there withit, and as the head rotates, the prong 37 engages the teeth 38 of thedie 39 to thereby cause the portion 40 of the die 39 to make the threads11 on the pipe 10.. Thus, by means of the simple rotation of the handle29, the pipe is quickly and easily threaded.

Any type of die head 39 can be used in the tool and the die heads 39 canbe interchanged as desired. The sleeve 12 has the slot 13 which receivesthe key 32 where l 13 by the sleeve and gear 31 are locked together. Thethree slots 14, 15 and 16 in the sleeve 12 receive the bolts 54 and 60,as shown in Figure l. The ring 43 has the three openings 44, 46 and 47through which the boltsiE-i and 60 extend, and there is also providedthe threaded 'apecrture 45 which receives the bolt 57. After the pipe 19has been inserted into the die head 39, and the setsczi'ews 54 are intheir proper position, then the master 'set'screvv 60 is adjusted bymeans of the handle 62 to thereby 'pmoperly position the ratchet diehead so that proper thrreadswill be cut on the pipes. The bracket 48 ispro .vided with a pair of slots 51 and 52 whichreceive the bolts'54, andthe'slot 53 receives the bolt 57 'as'shown in Figure 1. The bolt 'orscrew 57 preveuts accidental loss of the bracket 48 since the ends ofthe 'sl-ot53 terminatejshort of: the sides of the bracket -4E5. It isto-be noted .thatL-thebracket '48 has'two' sizes or thicknesses '49 and'50 which permit gauging of two different sizes of pipes.

By removing the bracket 48, the bolts 54 can be extended 'even'further'into the sleeve IZ'to't-hereby accommodate anothetr'jsize pipe.The inside diameter of the sleeve 12 "alsoserves as a gauge for a pipe.Thus, four idifierent nular side wall, there being registering aperturessaid end vvalls, a shaft including a cylindrical stem extending '4thcroughrsaid registering apertures, an enlarged shank extending fromsaid stem and terminating in a square shaped portion, a pinion gearkeyed to said stem and rotatably positioned in said housing, a gearmember meshing with said pinion gear and keyed to said sleeve, a headextending from said housing and provided with a chamher, there being arecess in said'housing, a die head havinga portion seated said recessand provided with a plurality of teeth on its outlet-periphery, said die'h'ead being provided with an inner threaded portion, a stud slidablymounted in said head 'andmeluding an inclined prong mounted for movementinto an'd out of engagemenfwith the teeth on said diehead, sea-1springcircumposed on said stud and abh'tting'said prong, a gauge mountedon said sleeve, a knob arranged on the outer end of said stud, saidgauge including a ring mounted on said sleeve and providedwith aplurality of threaded aperture-s'there being a first; secondand' third slot'in said sleeve, a semicircularbracket mounted on said ring'andhaving slots therein, "said bracket including twosec-tions the sleevetoniove only axially of the work piece, and a handle provided with asocket for receiving the square shaped portion of said shaft.

ReferencesCited in the file of this patent UNITED STATES PATENTS EmeryApr. 9, 1940 Wright July 3, 1951

